net: dsa: mt7530: fix NULL dereference on unbind of MT7531 and MT7621

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The core and io supplies are only requested for ID_MT7530: both the
devm_regulator_get() in probe and the regulator_enable() in
mt7530_setup() are guarded by the switch id, but mt7530_remove()
disables them unconditionally. On an MT7621 or an MT7531 both pointers
are still NULL from devm_kzalloc(), so rmmod or a sysfs unbind calls
regulator_disable() on NULL.

Fixes: ddda1ac116 ("net: dsa: mt7530: support the 7530 switch on the Mediatek MT7621 SoC")
Signed-off-by: Aleksei Sviridkin <f@lex.la>
Link: https://patch.msgid.link/20260918015020.2518315-2-f@lex.la
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Aleksei Sviridkin 2026-09-18 04:50:19 +03:00 • committed by Jakub Kicinski

parent 7c9f391ec8

commit c2cdef41e0

1 changed files with 11 additions and 9 deletions

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18

drivers/net/dsa/mt7530-mdio.c

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